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E. W. HEBENDEEN.

, SWINGTOOTH HARROW. No. 359,969. Patented Mar. 22, 1887.

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EDWARD \V. HERENDEEN, OF GENEVA, NEW YORK.

SWING-TOOTH HARROW.

SPECIFICATION forming part of Letters Patent No. 859,969, dated March22, 1887.

Application filed October 8, 1886.

To aZZ whom it may concern.-

Be it known that I, EDWARD \V. HEREN- DEEN, of Geneva, in the county ofOntario and State of New York, have invented certain Iniprovements inSwing-Tooth Harrows, of which the following is a specification.

The present invention relates to what are commonly known in the art asreversible or swing-tooth harrows, in which the teeth are connected tothe frame in such manner that when the harrow is drawn in one directionthey will assume a vertical or substantially a vertical position, andthat when the harrow is drawn in the opposite direction they will assumean inclination toward the rear.

7 The aims of my invention are principally to reduce the cost ofeonstructiomto give stronger support to the teeth in their differentpositions, and to prevent the splitting of the beams or frame-bars towhich the teeth are attached.

To this end the invention consists, essentially, in slotted or notchedplates of improved construction ,secured to the under side of the beamsor frame-bars, their form and position being such that they engage thetooth and limit its swinging motion, and that they also serve to preventthe disconnection of the tooth from the beam.

Referring to the accompanying drawings, Figurel represents aportion ofaharrow-beam having my improved devices applied thereto. Fig. 12 is avertical crosssection of the same on the line a; m. Fig. 3 is aperspective view of my improved stop-plate. Fig. is a top plan view ofthe parts represented in Figs. 1 and 2. Fig. 5 is a top plan view of thestop plate in modified form.

In the drawings, A represents the frame-bar; B, the harrow-tooth; O, thestop-plate, and D the vertical bolt by which the plate is secured inposition.

The tooth B may be of any approved form, and jointed or connected at itsupper end to the beam or frame in any appropriate manner which willadmit of its lower end swinging forward or backward in a plane parallelor substantially parallel with the line of travel, various connectionsfor this purpose being known in the art. I prefer, however, to constructthe tooth, as shown in the drawings, with its upper end benthorizontallyand later- Serial No. 215,718. [No model.)

ally at right angles to the body,in order to serve as a journal orpivot, this laterally-extended end being passed into or through a holein the beam, as shown in the drawings. This hole may extend eitherobliquely or at right angles to the face of the beam,nccording to thedirection in which the tooth is to swing.

The plate G, which is designed to assist the swinging movement of thetooth, support the same when in action,and prevent its accidentaldisconnection from the beam, is formed, as most plainly represented inFig. 3, with a flat portion or car adapted to be secured firmly to theunder side of the beam by means of the vertical bolt, D, and with aportion which is extended beyond the face of the beam ,and provided witha horizontal slot, at, through which the body of the tooth passes. Inorder to hold the plate the more firmly in position, I prefer to provideit, as shown,with vertical shoulders b to bear against the side face ofthe beam, and with vertical studs 0 to enter the under side of the beam;but it is to be understood that these studs and shoulders maybe eitheror both omitted, and that they may be modified in form at will, providedthey retain the mode of action illustrated in the drawings.

The slot of the plate is made of such length and the plate secured insuch position that when the harrow is drawn in one directionthat is tosay, with one end forward--the tooth may assume a backward inclination,as shown in Fig. 1, in which position it is firmly supported by itscontact with the plate at the rear end of the slot, and that when theharrow is drawn in the opposite direction the tooth will assume theupright position indicated by dotted lines in Fig. 1, and be sustainedby its contact with the opposite end of the slot. The slot will beextended in a direction parallel with or oblique to the face of the beam,according to the path in which the tooth is to vibrate in reference tothe beam. In Fig. 4 the two positions of the slot are illustrated, oneby full and the other by dotted lines.

The plateG may be secured to the under side of the beam in anyappropriate manner but I recommend, asshown in the drawings, theemployment of a single fasteningbolt passing through the plate, andthence upward entirely through the beam, the bolt thus applied servingthe double purpose of holding the plate in.

position and of tying the beam together, so as to prevent it from beingsplit or fractured by the strain of the teeth.

One of the chief advantages of my plate ap plied to the under side ofthe beam lies in the factthat it engages the tooth at the greatestpossible distance from its pivot, thus giving a more rigid support thanwould otherwise be obtained.

I am aware that pivoted barrow-teeth have been combined withstirrup-bolts; also, that cap-plates in various forms have been used tosecure swinging teeth to the side faces of harrow-beams; and, also, thata tooth having a laterally bent upper end has been secured by a plate tothe under side of the beam. I be-. lieve myself, however, to be thefirst toprovide a stop-plate adapted to be applied tothe under side of abeam and extend laterally beyond the same to engage a tooth pivoted tothe beam at a higher point.

\Vhile it is preferred to construct the plate with a continuous edge onthe outer side of the slot, it is obvious that this edge may be formedwith an opening into the slot, as shown at e, Fig. 5, through which thetooth may be conveniently removed when in an intermediate position forthe purpose of sharpening the same, or for other purposes, withoutnecessitating the removal of the plate 0.

Having thus described my invention, what I claim is 1. The combinationof a harrow-beam, a

2. The combination of the barrow-beam, the

swinging tooth having its upper end extended laterally into the beam,the slotted stop-plate applied to the under side of the beam andprojectedlaterally beyond its side face to engage the tooth, and aVertical bolt passing through 5 the plate and beam, substantially asdescribed, 1 whereby the bolt is caused to serve the double purpose ofconfining the plate in position and of preventing the beam from beingsplit by the tooth.

3. The stop-plate for a swing-toothiharrow, having the surface adaptedfor applicationto the under face of the barrow-beam and the extendedportion with a vertical slot or opening therethrongh .to receive and ofthe barrow-tooth.

4. The stop'plate for aharrow provided with the surface adapted forapplication to the under side of the harrow-beam, and also with the slotat, shoulders I), and studs 0.

In testimonywhereof I hereunto set my hand, this 6th day of October,1886, in the presence of two attesting witnesses.

EDYVARD V. HERENDEEN.

\Vitnesses:

S. A. TERRY, J. A. ROLLINGS.

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